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| RESEARCH ARTICLE The Early Aptian volcanic episode of Gutiolo (N Spain): Expression of the Bilbao Rift...Paleontología, Universidad Pais Vasco, Bilbao, Bizkaia, Spain 2 Facultad de Ciencia y Tecnología, Departamento...Petrología, Universidad del Pais Vasco, Bilbao, Bizkaia, Spain 3 Paleontology Department, The Natural History...Universidad Pais Vasco, Apartado 644, Bilbao 48080, Spain. Email: kepa.fernandezmendiola@ehu.es Funding information...Gutiolo volcanic unit belongs to the Aptian Bilbao Formation and crops out 6 km SE of Bilbao (N Spain) within |
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| temperate carbonate deposition in Neogene basins in SE Spain: a synthesis 121 PEDLEY, M. & GRASSO, M. The response...perspectives 307 KNOERICH, A.C. & MUTTI, M. Epitaxial calcite cements in Earth history: a cooler-water phenomenon...NELSON, C.S. t~¢ KAMP,P.J.J. Microstratigraphy of calcite cements in Pliocene 337 cool-water limestones...carbonate-siliciclastic packages in the Miocene of southern Spain. Models of microtidal temperate carbonate sedimentation...isolated island sites, especially partly submerged volcanic seamounts, more typically develop narrow carbonate |
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| massive sulfide sections commonly exhibit unreplaced volcanic relicts, indicating that the alteration succeeded...mostly bleached and hydrothermally metamorphosed volcanic rocks (lava flows and pillow lavas) and mafic-ultramafic...(1992). The mineralization is hosted by subaqueous volcanic rocks, sheared gabbro and peridotite, jasperoid...stratabound sulfide deposits overlying mineralized volcanic rocks, and of syngenetically deposited sulfides...being the depositional prod ucts of submarine volcanic-exhalative pro cesses, syngenetically formed |
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| groundwater travel times in carbonate-rock and volcanic-rock aquifers of southern Nevada are similar to...000-yr δ18O and δ13C global climate records for calcite precipitated in Devils Hole, Nevada at the end...3% sorbed in carbonate rocks to 0.5% sorbed in volcanic rocks, and matrix diffusion coefficients were...rocks (1.7 × 10− 7 cm2/s) than in higher porosity volcanic rocks (2.9 × 10− 7 cm2/s). The lack of dissolution...data, high-level tritium transport, and a vein calcite isotopic paleo-climate record. DIC 14C and DOC |
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| Caradocian volcanic rocks outcrop in three districts within this area, and this repetition of outcrop reveals...the variation shown by this dominantly rhyolitic volcanic series. A thick lower group of submarine bedded...andesite and rhyolitic rocks in the north, but these volcanic rocks are absent or represented by bedded tuffs...analyses indicate the variety of composition in the volcanic series while two analyses of Caledonian felsites...includes districts of good exposure of the Caradocian volcanic rocks around Pen-y-chain and in the southern part |
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| CO2-oil interactions. In general, the time of the volcanic eruption near the CO2 gas reservoir is considered...hydrocarbon-bearing basins that have experienced multiple volcanic events. In this paper, using dawsonite-bearing...typically either spatially adjacent to the causal volcanic rocks or can communicate with these rocks through...some researchers have regarded the age of the volcanic eruption that has a * Corresponding author. **...multiple volcanic and fluid filling activities in the basin and surrounding areas, a volcanic eruption |
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| small calcareous nodules that are surrounded by volcanic ash. The theory being that they were buried alive...soft parts. The guard, wh ich was compo sed of calcite . lay in the hi nder part of it body . with i ts...know of any in the rest of Britain. there are outcrop of aeolianite. This is cemented dune sand. for...explore Gran Canaria, arguably one of the finest volcanic islands in the world. For this trip we combine...caldera gradual ly filled up with lava and other volcanic material over the next few million years. There |
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| deformed rocks, its structural style and the lack of volcanic rocks, Whatarangi Formation is interpreted as...suite is immediately adjacentthe Cape Palliser volcanic outcrop, a remnant of a seamount, comprising alkalic...from red argillite from the Cape Palliser volcanic outcrop and green argillite from a nearby locality... Fossils in sedimentary rocks associated with volcanic outcrops have frequently been used to date the...in the Torlesse terrane, and in every case,the volcanic-hosted fossils provide ageswhich are the same |
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| springsinter andtravertineand,in depth,a quartz-calcite-kaolinite-smectite-(illite) alterationassemblage...elements(after Hamilton, 1979) of Papua New Guinea. Volcanic outcrop A comprisesYelia and Marble Peak centers (see...(1974). southeasternextremity of the Highlands volcanic 642 SILLITOE, BAKER,AND BROOK v V V V V...ocks-merit and maar formation. These Pliocene volcanic units and related sedimentaryrocks,of which only...andesitic volcano and the extinct Marble Peak volcanic depicted in Figures 3 and 4. These truly intrusive |
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| Studies Cementation 200 Quartz/Calcite/Interrelation of Quartz and Calcite/ Hematite/Clay Minerals lntrastratal...Laboratory Studies 312 Distinguishing Dolomite from Calcite/ Textures Ancient Dolomites 316 Hanson Creek... Iron-Rich Rocks Banded Iron Formations 400 Outcrop Characteristics/Regional Characteristics/ Worldwide...Carbonate rocks are composed largely of CaCO 3 (calcite or aragonite) or CaMg(CO3) 2 (dolomite), with other...sedimentary and nonsedimentary can be drawn on the outcrop with a pencil. Similarly, in the deep oceanic basins |
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| Leadhills-i';anlockhead district The Stratigraphy ••• ••• a. The Volcanic Rocks • •• b. rladiolarian Cherts ••• • •• c....relationship e. The calcite-barytes relationship ••• f. Relationship of sphalerite-galena to calcite-barytes .••...south-west axes. The general succession comprises volcanic rocks, successively overlain by radiolarian cherts...shales, and greywackes of the Lowther Group. The volcanic rocks have been assigned to the Arenig, and the...to the valleyso ~. The Volcanic Rocks. Two outcrops of the Arenig Volcanic Series occur in the Lea |
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| Abstract-Mordenite occurs in hydrothermally altered rhyolitic volcanic rocks at the margin of a Late Miocene lake basin...alteration, Mordenite, Potassium, Rhyolitic tuff, Volcanic ash, X-ray powder diffraction, Zeolite. INTRODUCTION...with Tortonian ash fall tuffs and tuffites. The volcanic rocks are overlain and underlain by calcareous...Seki, 1973; Senderov, 1963; Whittemore, 1972). In volcanic rocks, crystallization of the highly siliceous...zeolitization or silicification. Elsewhere, the entire outcrop appears to consist of a green rock that may have |
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| Formation and Puget Group_______________ Unnamed volcanic rocks_________________________ Upper Tertiary...Formation____________________________________ 10. Volcanic conglomerate in the Tukwila Formation________...grained rocks. In the northern part of the area, volcanic sandstone, siltstone, nnd conglomerate as much...beds are composed largely of reworked D. VINE volcanic material and commonly contain as much as 50 percent...interbedded units of volcanic sandstone and siltstone, tuff, lapilli tuff, tuff-breccia, and volcanic conglomerate |
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| sediments with interbedded volcanic deposits. The thickest continuous volcanic sequence by far is ~175 m...interpretation of a thick submarine to emergent volcanic succession. The sequence is subdivided into two...mainly of interbedded tuff, lapilli tuff, and volcanic diamictite. A Late Miocene (6.48 Ma) 2.81-m-thick...attributed to recurring cycles of submarine to emergent volcanic activity that occurred proximal to the drill site...evidence of significant Late Miocene submarine volcanic activity in the Ross Embayment during a period |
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| physical property testing was carried out on outcrop samples of the Permian igneous rocks in southwestern...different lithologies, including basalt, tuff, and volcanic breccia, were analyzed and studied. Based on the...potential and good exploration prospect of the Permian volcanic rocks [5,6]. Industrial gas flow has been obtained...western Sichuan, which proves that the Permian volcanic oil and gas reservoirs in the Sichuan Basin represent...drilling in the basin has revealed that the Permian volcanic rocks have good reservoir conditions [9]. The |
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| . . . . . . . . . . . . . . . . . . . 137 6.9 Volcanic Rocks . . . . . . . . . . . . . . . . . . . ....emperors Nero and Vespasian. He was Procurator of Spain under Nero. He had a keen interest in natural phenomena...560–636) A prolific writer who lived in Visigothic Spain, Isidore of Seville was long associated with the...geologic workings of springs, artesian wells, and volcanic eruptions (Fig. 1.2). In the science of mineralogy...relative hardness in 1922: (1) talc, (2) gypsum, (3) calcite, (4) fluorite, (5) apatite, (6) orthoclase, (7) |
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| are more than 200 carbonate minerals, including calcite and dolomite, two of the most common minerals on...scratched by a fingernail, but not easily. 3. Calcite- Can be scratched by a sharp coin. Very easily...world in rocks that were originally formed by volcanic activity (igneous rocks) and in rocks that were...(schists) of rocks that originally formed through volcanic activity (igneous rocks). These rocks were then...variety of other minerals, including limonite, calcite, malachite, smithsonite, azurite and hemimorphe |
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| STRATIGRAPHY O FKIRSEHTB, Kirsehir Outcrops . . . Ayas Outcrop . . . . East of Alaca H o y u k West-North-West...cover of Neogene formations, both sedimentary and volcanic. Note that it is faced by two supplementary Locality...6000 sq. km. of melange exposed along the Ankara outcrop, and it is obvious that this is only a small fraction...showing the northward continuation of the Ankara outcrop beyond C.ankiri, reserves a tablet for "Mesozoique...the greywacke-limestone complex of the Ankara outcrop, and in many cases separated individual blocks |
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| structural arch.._.____-__--_____-_-__-_____. Northern volcanic field_______-___-_____-___-____--___.______-__...extrusive rocks form the eastern part of the northern volcanic field of the Bearpaw Mountains and occur as lava...the quadrangle, the eastern end of the northern volcanic field of the Bearpaw Mountains is faulted down...part of the quadrangle. Here their total area of outcrop is slightly less than 1 square mile, and they have...area to the north. Their total mapped area of outcrop is about 30 square miles. KOOTENAI FORMATION The |
 | McKeown, M. C., Edmonds, E. A., Williams, M., Freshney, E. C., Masson Smith, D. J. (1973) Geology of the Country around Boscastle and Holsworthy (Explanation of the inland areas of One-inch Geological Sheet 322 and 1:50 000 Geological Sheet 323, New Series) Memoirs of the Geological Survey. Institute of Geological Sciences | Report (issue) |
| Account: Barras Nose Formation, 15; Ti11tagel Volcanic Porma..tion, 16; Trambley Cove F'ormatio.11, 16;...•• • • " " " • ,. General Account, 65. Details: Volcanic Rocks and Epidiorite, 66; J...,amprophyres, 68...;Lo-cation of ground magnetic trav,erses \vith Tintagel Volcanic Forma. .. .. .. . tio11 <)utcrops •• .. .. ....lavas and agglon1era.tes attest the explosive volcanic activity of the ti1nes. Cl1erts tlssociated with...Davidstow, is probably gen.etica.lly related to tl1e volcanic- rocks. 111 tJ1e 11ortl1-east, arou11d I-Ial"1·ill |
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| lithospheric continuity with the African Plate. The volcanic rocks of the PachinoCapo Passero centre show fairly...at greater depth than the neighbouring Neogene volcanic products of the Hyblean Plateau, likely from an...al., 1998). By contrast, the oldest outcropping volcanic rocks of southeastern Sicily, the Cretaceous lavas...obtained on selected samples of Pachino-Capo Passero volcanic rocks with the aim of defining the isotopic and...geochemical and isotopic data of Pachino-Capo Passero volcanic products will be discussed in relationship to |
 | CONAGHAN, P. J., MOUNTJOY, E. W., EDGECOMBE, D. R., TALENT, J. A., OWEN, D. E. (1976) Nubrigyn algal reefs (Devonian), eastern Australia: Allochthonous blocks and megabreccias. Geological Society of America Bulletin, 87 (4) 515 doi:10.1130/0016-7606(1976)87<515:nardea>2.0.co;2 | Journal (article/letter/editorial) |
| in sublittoral to littoral environments around volcanic pedestals on a "Nubrigyn shelf." The allochthonous...at block margins; (6) lack of an autochthonous volcanic foundation for the "reefs"; and (7) anomalous...complex to the west upon a geologically persistent volcanic archipelago, the Molong Arch, where source rocks...Devonian times comprised several such arches or volcanic archipelagoes separated by intervening sedimentary...The clastic fill of both troughs is largely of volcanic origin and provenance and was shed from the neighboring |
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| _____________ ... .. . .... . Geology... ._ . _. Volcanic rocks of Late Jurassic age ________________________...analyses of basalt, diabase, and spilite from volcanic rocks near Stonyford __.___________ _ _..... 2...separates volcanic rock from the underlying weakly metamorphosed sedimentary rock. The slab of volcanic rock...than do other rock types in the vicinity. The volcanic rocks are of Late Jurassic age and consist chiefly...crushed rock as much as 250 m thick separates the volcanic rock above the thrust fault from the cataclastic |
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| (a) General Account. (b) The Relationship of the Volcanic Mass to Adjacent Sh~ta. (c) The Igneous Rocks... (e) The Minor Intrusions. (f) The Age of the Volcanic Series. V. The Ordovician Succession . . . . ...(b) The Northern Part of the Area. VII. The Main Volcanic Group ..........................................the Basalt to the Spilites. VIII. The Upper Acid Volcanic Group .............................. IX. The '...' Bala Mudstones' and the Age of the Volcanic Rocks X. The Basic Intrusions ........................ |
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| _______ --------------------Clastic sedimentary and volcanic rocks of the Winchester Mountains ____ -----------Stratigraphy...--------------------------------------Typical outcrop of Scanlan conglomerate ______________________...________________________________ -___ Typical outcrop of Barnes conglomerate __________________________________...with a population of about 200, much the largest community within the quadrangle boundaries. About 2 miles...important unconformity, include locally occurring volcanic tuff, breccia, and conglomerate probably of Triassic |
